Evidence for Evolution

Dec 03, 2012

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Evidence for Evolution

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Evidence for Evolution

Evidence for Evolution There are many lines of evidence that show that evolution has occurred. They come from both the fossil record and from biology. Lines of evidence for evolution cited by Darwin Fossils provide direct evidence for changes in life in rocks of different ages.

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Evidence for Evolution

15 Feb. 2012. Evidence_Evolution-Lab.ppt. 2. Definitions. Evolution: change in average phenotype of population through many generations;

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Evidence for Evolution

Evidence for Evolution. Evolution. Evidence for Evolution 1. Fossil evidence petrified or preserved specimen in things like: ice, amber, sand, clay some are extinct remains of the hard parts of organisms. Evolution. Evidence for Evolution Fossil evidence relative dating

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Evidence for Evolution

Evidence for Evolution. Chapter 2. Evidence of change through time: Living species. Soapberry bugs Vestigial structures “Vestigial” genes (pseudogenes). Evolution of beak length in soapberry bugs – microevolution. Native to southern US In Florida, native host plant is balloon vine

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Evidence for Evolution

Evidence for Evolution. Homologous Structures. Similar features that originated from a shared ancestor The presence of homologous features in different species indicates that the species shared a fairly recent common ancestor. Analogous Structures.

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Evidence for Evolution

Evidence for Evolution. A slide extravaganza…. Types of evidence…. 1. Evidence from the fossil record (dead things). Fossil formation. Bones and shells undergo mineral replacement and are turned into rock

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Evidence for Evolution

Evidence for Evolution. Fossil Record and Biogeography Embryology Body Structures ( Anatomy) Biochemistry. Fossil Record. Fossils are an important source of evolutionary evidence because they provide a record of early life and evolutionary history.

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Evidence for Evolution

Evidence for Evolution. Comparative Studies in Biochemistry DNA All living organisms possess the same four nitrogen base pairs (A, T, C, G)  implies a common ancestor More closely related species would share a greater proportion of their genome

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Evidence for Evolution

Shania Didier Serre. Evidence for Evolution. A fossil is a remnant or a trace of a one living thing. Usually, it is the ‘hard parts’ of plants and animals that are preserved. E.g. wood, bones or shells . The ‘softer parts’ are usually decayed

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Evidence for Evolution

Evidence for Evolution . Evidence for Evolution . Support the evolution theory States/ evidence for a common ancestor with in lines of species . Types of Evidence . 5 evidences for evolution Fossil evidence Molecular evidence Embryology Geographic distribution

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Evidence for Evolution

Evidence for Evolution. Fossils. Evidence for evolution. Fossils. Show: Evolution Primer: How do we know evolution happens?. Evidence for evolution. DNA All life uses the same 4 DNA bases: thymine, adenine, guanine, cytosine

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Evidence for Evolution

Evidence for Evolution. SBI3U0. Darwin’s Evidence . Darwin spent several years after returning from South America gathering data, consulting other scientists, conducting experiments, and reflecting on his findings before publishing his work

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EVIDENCE FOR EVOLUTION

SBI 3U. EVIDENCE FOR EVOLUTION. ‘Theory of evolution by natural selection’ called… “the greatest idea anybody has ever had…” “Today scientists have as much confidence in evolution as they do in the existence of atoms or that microorganisms cause infectious disease.” Jerry A. Coyne.

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Evidence for Evolution

Evidence for Evolution. #1 — Fossil Evidence. Fossils are remains which have been buried for millions of years. Fossils show how organisms have changed over time. How a fossil is formed?. A dinosaur dies at a stream's edge .

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Evidence for Evolution

Evidence for Evolution. Evidence. Evidence of common ancestry among species comes from many sources. #1 Fossil Evidence. Fossils Earth is Millions of years old! Fossils in older layers are more primitive than those in the upper layers. Extinct Fossils resemble modern animals .

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Evidence for evolution

Evidence for evolution. Patrick Lind Portland State University Professor Barbara Shaw. Trilobite- http://everystockphoto.s3.amazonaws.comfossil_fossils_cambrian_327288_l.jpg. Evidence for evolution. What did Charles Darwin (1809-1882) and others notice? Huge variety of living things

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Evidence for Evolution.

Evidence for Evolution. Fossils and Evolution. Fossil: Any non-living object obtained from the ground indicating the former presence of a living thing in a broad sense is a FOSSIL

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Evidence for Evolution

Evidence for Evolution. By Diana L. Duckworth Rustburg High School Campbell County. Comparative Anatomy. Homologous Structures. Evidence of common ancestry – same groups of bones. http://encarta.msn.com/media_461553540_761554675_-1_1/analogous_and_homologous_structures.html.

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Evidence for Evolution

Evidence for Evolution. Fossil record Comparative Anatomy  Similarities in body structures Comparative Embryology Similarities in early development Comparative Molecular Biology Similarities in DNA Biogeography Geographic distribution of living species. Fossil Record.

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Evidence for Evolution

Evidence for Evolution. Reading: Freeman, Chapter 23, 26. The Fact of Evolution Evolution -the progressive change of organisms as they descend from ancestral species-is a fact. By now, the evidence for it is overwhelming and ubiquitous.

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Evidence for Evolution

Evidence for Evolution. Signs of evolution. Evolution leaves observable signs. Such clues to the past are essential to any historical science. Biological evolution has left marks on all aspects of life—in the fossil record and in the diverse assortment of modern species. The Fossil Record.

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Evidence for Evolution

Evidence for Evolution. Concept 14.2 pp 299-304. Fossil Record. Fossils- preserved remains of organisms from the past- extinct. Most- sedimentary rocks- Chronological collection of fossil remains Each rock layer represents a particular time period. Older fossils are found at the bottom.

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